36 



MORACEAE. 



Broussonetia. Paper Mulberry. 

 (Family Moraceae). 



Rather small trees with soft 

 ring-porous pale wood with tan- 

 gential wood-parenchyma pattern 

 and milky sap: deciduous. Twigs 

 moderate, rounded, zig-zag, his- 

 pid when young: pith rather 

 large, round, white, with a very 

 thin green diaphragm at each 

 node. Buds moderate, conical, 

 solitary, sessile, with an outer 

 striate scale. Leaf-scars typically 

 alternate and 2-ranked, rather 

 large, rounded, elevated: bundle- 

 traces about 5, compound, aggre- 

 gated in an ellipse: stipule-scars 

 long and narrow. 



Winter-character references to 

 Moraceae: Broussonetia Kasino- 

 ki. Shirasawa, 243-4, pi. 4. B. 

 papyrifera. Schneider, f. 112, 

 the contraria form; Shirasawa, 

 244, pi. 4. Ficus Carica. Schneider, f. 112; Shirasawa, 240, 

 pi. 3; Ward, 1:51, f. 33, 118, f. 59; Zuccarini, 25, pi. 14. Ma- 

 dura pomifera. Blakeslee & Jarvis, 330, 494; Hitchcock (3), 

 17; Otis, 132; Schneider, f. 144-145. Morus alba. Blakeslee 

 & Jarvis, 340, 468, pi.; Bosemann, 75; Schneider, f. 144; Will- 

 komm, 28, f. 32. M. nigra. Bosemann, 75; Schneider, f. 143. 

 M. rubra. Blakeslee & Jarvis, 340, 466, pi.; Brendel, 27, 29, 

 pi. 4; Hitchcock (1),3, f. 14, (3), 17, (4), 138, f. 90-94; Otis, 134. 

 1. Twigs slender (2-3 mm.), brown. B. Kasinoki. 



Twigs relatively stout (4 mm.), greenish gray. 2. 

 3. Leaves alternate and 2-ranked. (1). B. papyrifera. 



Leaves often opposite. (2). B. papyrifera contraria. 



